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Preservative
Dear all,
A preservative for cosmetic product can be revalidated and extended its expiry date
A reverification of its parameters as well as a challenge test of the finished product are sufficient to revalidate a preservative
Best regards -
1 Reply
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Not aware the term ‘revalidation” in this context. ALL cosmetics should be marketed with challenge testing data justifying their microbiological safety through consumer use - tho’ consumer can use stuff forever and do not respect ex dates - most major companies see three years in this regard and use “rapid ageing” of product to project preservative stability and efficacy.
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